<template>
  <div class="swiper"
       ref="swiper">
    <div class="content">
      <slot></slot>
    </div>
  </div>
</template>
<script>
import BScroll from "better-scroll";
export default {
  name: "Scroll",
  props: {
    probeType: {
      type: Number,
      default () {
        return 0
      }
    },
    pullUpLoad: {
      type: Boolean,
      default () {
        return false
      }
    },
    scrollbar: {
      type: [Boolean, Object],
      default () {
        return false
      }
    },
  },
  data () {
    return {
      scroll: null
    };
  },
  mounted () {
    this.scroll = new BScroll(this.$refs.swiper, {
      click: true,
      probeType: this.probeType,
      pullUpLoad: this.pullUpLoad,
      scrollbar: this.scrollbar,
      mouseWheel: {
        speed: 20,
        invert: false,
        easeTime: 300
      }
    })
    this.scroll.on('scroll', (position) => {
      this.$emit('scroll', position);
    });
    this.scroll.on('pullingUp', () => {
      this.$emit("pullingUp");
    })
  },
  methods: {
    scrollTo (x, y, timer = 500) {
      this.scroll.scrollTo(x, y, timer); // better-scroll内置方法，回到指定位置
    },
    finishPullUp () {
      this.scroll.finishPullUp();
      this.refresh();
    },
    refresh () {
      this.scroll.refresh();
    },
    getScrollY () {
      return this.scroll ? this.scroll.y : 0;
    },
    enable () {
      this.scroll && this.scroll.enable();
    },
    disable () {
      this.scroll && this.scroll.disable();
    }
  }
};
</script>
<style scoped>
</style>
